ETF vs Index Fund: Which passive investment option is better for you?

As passive investing gains popularity, investors increasingly have to choose between two common routes — ETFs and index funds. Both seek to replicate an index at relatively low cost, but differ in how they are bought and sold, their liquidity and the convenience they offer for regular investing.

WHAT ARE PASSIVE FUNDS?

Passive funds are investment funds that track a market index, like the Nifty 50 or Sensex, instead of trying to beat the market. They buy the same stocks in the same amounts as the index. Common types include index funds and exchange-traded funds (ETFs). They are getting popular amongst investors due to their simplicity, low cost and no dependence on fund managers. As per AMFI Crisil Factbook 2026, passive funds share of total mutual fund AUM has nearly doubled from 9.8% in 2021 to 18.6% in 2026.

ARE ETFS AND INDEX FUNDS AVAILABLE ONLY FOR INDICES SUCH AS THE SENSEX AND NIFTY?

No. ETFs and index funds are available across a much wider spectrum than the popular Sensex and Nifty 50. Within equities, investors can choose products tracking broader indices as well as sectors and themes such as banking, manufacturing, metals, PSU banks, chemicals and energy. Passive options are also available in fixed income and commodities through gilt ETFs, target maturity funds, and gold and silver funds. ETFs typically offer a wider range of choices than index funds, particularly across sectoral, thematic and commodity categories.

HOW DO ETFS AND INDEX FUNDS DIFFER FROM EACH OTHER?

The main difference is in how they are bought and sold. ETFs trade on stock exchanges like shares and can be bought or sold at market prices throughout the trading day. Investors need a demat and trading account to transact in them. Index funds are bought or redeemed through the mutual fund at the applicable end-of-day NAV and do not require a demat account.

WHAT IS THE COST DIFFERENCE BETWEEN AN ETF AND AN INDEX FUND?

ETFs generally have lower expense ratios than index funds, but investors may incur other costs such as brokerage, statutory charges and the bid-ask spread when buying or selling them on an exchange. Index funds typically have slightly higher expense ratios, but investors trans act directly with the mutual fund and do not incur trading-related costs. Some index funds, such as gold funds that invest in the fund house’s underlying ETF, may have an additional layer of costs. Index funds may also levy an exit load if redeemed within a specified period, while ETFs do not have exit loads. Investors should therefore compare the total costs rather than expense ratios alone.

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IS AN ETF OR AN INDEX FUND BETTER FOR YOU?

ETFs may be better suited to active investors who want greater flexibility and are comfortable executing their own trades. However, investors should check trading volumes before choosing an ETF, as some may have low liquidity, making it difficult to buy or sell at the desired price. Index funds may suit investors who prefer a simpler, long-term approach and want to stagger their investments regularly through SIPs.